Is mankind alone in the universe? Or are there somewhere other intelligent beings looking up into their night sky from very different worlds and asking the same kind of question?
It has always been my opinion since I first possessed such a thing as an opinion, that the man who knows only one subject is next tiresome to the man who knows no subject. Therefore, in the course of my life I have taught myself whatever I could, and although I am not an educated man, I am able, I am thankful to say, to have an intelligent interest in most things.
There are three kinds of intelligence: one kind understands things for itself, the other appreciates what others can understand, the third understands neither for itself nor through others. This first kind is excellent, the second good, and the third kind useless.
A man cannot utter two or three sentences without disclosing to intelligent ears precisely where he stands in life and thought, whether in the kingdom of the senses and the understanding, or in that of ideas and imagination, or in the realm of intuitions and duty.
Conversation in its happiest development is a link, equally exquisite and adequate, between mind and mind, a system by which men approach one another with sympathy and enjoyment, a field for the finest amenities of civilization, for the keenest and most intelligent display of social activity. It is also our solace, our inspiration, and our most rational pleasure. It is a duty we owe to one another; it is our common debt to humanity.
I am an intelligent river which has reflected successively all the banks before which it has flowed by meditating only on the images offered by those changing shores.
Inability to accept the mystic experience is more than an intellectual handicap. Lack of awareness of the basic unity of organism and environment is a serious and dangerous hallucination. For in a civilization equipped with immense technological power, the sense of alienation between man and nature leads to the use of technology in a hostile spirit—-to the “conquest” of nature instead of intelligent co-operation with nature.
Even the greatest fool can accomplish a task if it be after his heart. But the intelligent man is he who can convert every work into one that suits his taste. No work is petty. Everything in this world is like a banyan seed, which, though appearing tiny as a mustard seed, has yet the gigantic banyan tree latent with it. He indeed is intelligent who notices this and succeeds in making all work truly great.
Life is very narrow. Bring any club or company of intelligent men together again after ten years, and if the presence of some penetrating and calming genius could dispose them to frankness, what a confession of insanities would come up!
I'm grateful to be an American. I am grateful that we can be angry at the terrorist assault and at the same time be intelligent enough not to hold a grudge against every Arab and every Muslim.
We know that the Zanj (blacks) are the least intelligent and the least discerning of mankind, and the least capable of understanding the consequences of actions.