I can calculate the motion of heavenly bodies but not the madness of people.
Family not only need to consist of merely those whom we share blood, but also for those whom we'd give blood.
To live alone is the fate of all great souls.
A great man is different from an eminent one in that he is ready to be the servant of the society.
The first time someone shows you who they are, believe them.
That man is the noblest creature may also be inferred from the fact that no other creature has yet contested this claim.
In many people it is already an impertinence to say 'I'.
It is no measure of health to be well adjusted to a profoundly sick society.
A man's feet should be planted in his country, but his eyes should survey the world.
Men are anxious to improve their circumstances, but are unwilling to improve themselves; they therefore remain bound.
Each man is questioned by life; and he can only answer to life by answering for his own life; to life he can only respond by being responsible.
Challenging the meaning of life is the truest expression of the state of being human.
I just invent, then wait until man comes around to needing what I've invented.
The greatest attitude of all is gratitude.
If money help a man to do good to others, it is of some value; but if not, it is simply a mass of evil, and the sooner it is got rid of, the better.
How important it is for us to recognize and celebrate our heroes and she-roes!
A man is great by deeds, not by birth.
Ever more people today have the means to live, but no meaning to live for.
I despise people who depend on these things [heroin and cocaine]. If you really want a mind-altering experience, look at a tree.
By providing students in our Nation with such an education, we help save our children from the clutches of poverty, crime, drugs, and hopelessness, and we help safeguard our Nation's prosperity for generations yet unborn.
Are we happy that our grandchildren may never seen an elephant except in a picture book?