Who said “Ideas too are a life and a world.”?

“It is ideas, not vested interests, which are dangerous for good or evil.”

“All achievement, all earned riches, have their beginning in an idea! p.18”

“An idea that is not dangerous is not worthy of being called an idea at all.”

“If you are possessed by an idea, you find it expressed everywhere, you even smell it.”

“Ideas are refined and multiplied in the commerce of minds. In their splendor, images effect a very simple communion of souls.”

“Virtue by premeditation isn't worth much.”

“First we have to believe, and then we believe.”

“Man is to be found in reason, God in the passions.”

“Erudition can produce foliage without bearing fruit.”

“Once we know our weaknesses they cease to do us any harm.”

“Nowadays three witty turns of phrase and a lie make a writer.”