"When people ask me silly questions about my private life, I just say, I don't discuss that"

"A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves"

"Buildings should serve people, not the other way around"

"Questions are never indiscreet, answers sometimes are"

"Borders? I have never seen one. But I have heard they exist in the minds of some people"

"Life is life - whether in a cat, or dog or man. There is no difference there between a cat or a man. The idea of difference is a human conception for man's own advantage"

"Sarcasm: the last refuge of modest and chaste-souled people when the privacy of their soul is coarsely and intrusively invaded"

"Plunge boldly into the thick of life, and seize it where you will, it is always interesting"

"Question everything. Learn something. Answer nothing"

"People with many interests live, not only longest, but happiest"

"Cats and monkeys; monkeys and cats; all human life is there"