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Wisdom is the daughter of experience

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Knowledge of the past and of the places of the earth is the ornament and food of the mind of man.

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The knowledge of all things is possible

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Although nature commences with reason and ends in experience it is necessary for us to do the opposite, that is to commence with experience and from t...more

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Obstacles cannot crush me. Every obstacle yields to stern resolve. He who is fixed to a star does not change his mind.

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Quando ouvimos os sinos, ouvimos aquilo que já trazemos em nós mesmos como modelo. Sou da opinião que não se deverá desprezar aquele que olhar atentam...more

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The acquisition of knowledge is always of use to the intellect, because it may thus drive out useless things and retain the good. For nothing can be l...more

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They will say that I, having no literary skill, cannot properly express that which I desire to treat of, but they do not know that my subjects are to ...more

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Nature is the source of all true knowledge. She has her own logic, her own laws, she has no effect without cause nor invention without necessity.

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As iron rusts when not used, and water gets foul from standing or turns to ice when exposed to cold, so the intellect degenerates without exercise.-Le...more

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To me it seems that those sciences are vain and full of error which are not born of experience, mother of all certainty, first-hand experience which i...more