I would say act like a man of thought and think like a man of action.
Je dirais qu'il faut agir en homme de pensée et penser en homme d'action.
Original text (French)
Notes from Wikiquote
Speech at the Descartes Conference in Paris (1937)
Original text (French)
Life does not proceed by the association and addition of elements, but by dissociation and division.
Quote text and notes from Wikiquote: Henri Bergson (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.