At sixteen, the adolescent knows about suffering because he himself has suffered, but he barely knows that other beings also suffer.

The money you have gives you freedom; the money you pursue enslaves you.

Do I dare set forth here the most important, the most useful rule of all education? It is not to save time, but to squander it.

Chemistry... is like the maid occupied with daily civilisation; she is busy with fertilisers, medicines, glass, insecticides ... for she dispenses the recipes.

She was dull, unattractive, couldn't tell the time, count money or tie her own shoe laces... But I loved her

He thinks like a philosopher, but governs like a king.

I only see clearly what I remember.