Look for simplicity and then distrust it.
The world becomes more difficult if you don't solve your problems.
Lourenço Neto
May it not be immortal, since it is flame, but may it be infinite while it lasts...
Vinicius de Moraes
You make science with facts, like you make a house with stones; but an accumulation of facts is no more a science than a pile of stones is a house.
Poincaré
When eloquence, inspired from the depths of the soul, regurgitates in spurts from the lips of a lover, triumph is certain.
Camilo Castelo Branco
I think, therefore I am.
René Descartes