عمومي بیولوژي

You can’t buy happiness, but you can buy books and that’s kind of the same thing.

One always has a better book in one’s mind than one can manage to get onto paper.

Success is walking from failure to failure with no loss of enthusiasm.

It's how you deal with failure that determines how you achieve success.

If all the economists were laid end to end, they’d never reach a conclusion.

Do not go where the path may lead, go instead where there is no path and leave a trail.

I attribute my success to this: I never gave or took any excuse.

A book is the only place in which you can examine a fragile thought without breaking it.