Some happy talent, and some fortunate opportunity, may form the two sides of the ladder on which some men mount, but the rounds of that ladder must be made of stuff to stand wear and tear; and there is no substitute for thorough-going, ardent, and sincere earnestness.
Concern for man and his fate must always form the chief interest of all technical endeavors. Never forget this in the midst of your diagrams and equations.
The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.
A good leader is not necessarily the most popular person in their business, but the best ones are liked because they are respected for their clarity and vision.
If you are ready to be intimate, you will encourage the other person also to be intimate. Your unpretentious simplicity will allow the other also to enjoy simplicity, innocence, trust, love, openness.