Hinduism threw away Buddhism after taking its sap. The attempt of all the Southern Acharyas was to effect a reconciliation between the two. Shankaracharya's teaching shows the influence of Buddhism. His disciples perverted his teaching and carried it to such an extreme point that some of the later reformers were right in calling the Acharya's followers "crypto-buddhists".
Think always: I am ever-pure, ever-knowing, and ever-free. How can I do anything evil? Can I ever be befooled like ordinary people with the insignificant charms of lust and wealth? Strengthen the mind with such thoughts. This will surely bring real good.
Each soul is potentially divine. The goal is to manifest this divinity by controlling nature, external and internal. Do this either by work, or worship, or psychic control, or philosophy - by one, or more, or all of these - and be free. This is the whole of religion. Doctrines, or dogmas, or rituals, or books, or temples, or forms, are but secondary details.
That is the great fact which you ought to remember. We are the children of the Almighty, we are sparks of the infinite, divine fire. How can we be nothings? We are everything, ready to do everything, we can do everything, and man must do everything.
Every atom is trying to go and join itself to the next atom. Atoms after atoms combine, making huge balls, the earths, the suns, the moons, the stars, the planets. They in their turn, are trying to rush towards each other, and at last, we know that the whole universe, mental and material, will be fused into one.
Some people are so afraid of losing their individuality. Wouldn't it be better for the pig to lose his pig-individuality if he can become God? Yes. But the poor pig does not think so at the time. Which state is my individuality? When I was a baby sprawling on the floor trying to swallow my thumb? Was that the individuality I should be sorry to lose? Fifty years hence I shall look upon this present state and laugh, just as I now look upon the baby state. Which of these individualities shall I keep?
I want to start two institutions, one in Madras and one in Calcutta, to carry out my plan; and that plan briefly is to bring the Vedantic ideals into the everyday practical life of the saint or the sinner, of the sage or the ignoramus, of the Brahmin or the Pariah.
Man stands in materialism; you and I are materialists. Our talking about God and Spirit is good; but it is simply the vogue in our society to talk thus: we have learnt it parrot-like and repeat it. So we have to take ourselves where we are as materialists, and must take the help of matter and go on slowly until we become real spiritualists, and feel ourselves spirits, understand the spirit, and find that this world which we call the infinite is but a gross external form of that world which is behind.
He who was Shri Rama, whose stream of love flowed with resistless might even to the Chandala (the outcaste); Oh, who ever was engaged in doing good to the world though superhuman by nature, whose renown there is none to equal in the three worlds, Sita's beloved, whose body of Knowledge Supreme was covered by devotion sweet in the form of Sita. (part of A Hymn To Shri Ramakrishna)