The greatness of a man is not in how much wealth he acquires, but in his integrity and his ability to affect those around him positively.
The secret of being a bore is to tell everything.
The cloud is free only to go with the wind. The rain is free only in falling.
The imagination is not a state: it is the human existence itself.
Character is like a tree and reputation like a shadow. The shadow is what we think of it; the tree is the real thing.
Good actions ennoble us, and we are the sons of our deeds.
Be less curious about people and more curious about ideas.
Liberty, according to my metaphysics is a self-determining power in an intellectual agent. It implies thought and choice and power.
That which can be asserted without evidence, can be dismissed without evidence.
In the rush for justice it is important not to lose sight of principles the country holds dear.
A scientist in his laboratory is not a mere technician: he is also a child confronting natural phenomena that impress him as though they were fairy tales.?
I am not a saint, unless you think of a saint as a sinner who keeps on trying.
I am not ashamed to confess that I am ignorant of what I do not know.
Never lend your car to someone you've given birth to.
Our greatest foes - and whom we must chiefly combat - are within.
Remember upon the conduct of each depends the fate of all.
Parents wonder why the streams are bitter, when they themselves have poisoned the fountain.
Advice to intellectuals: let no-one represent you.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
Hope is like the sun, which, as we journey toward it, casts the shadow of our burden behind us.
What is necessary to change a person is to change his awareness of himself.