He who thinks little errs much.

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Simplicity is the ultimate sophistication.

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life without love, is no life at all

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Obstacles cannot bend me. Every obstacle yields to effort.

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Painting is poetry that is seen rather than felt, and poetry is painting that is felt rather than seen.

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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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I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.

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Study without desire spoils the memory, and it retains nothing that it takes in.

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Your brain is much better than you think; just use it!

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average human “looks without seeing, listens without hearing, touches without feeling, eats without tasting, moves without physical awareness, inhales without awareness of odour or fragrance, and talks without thinking.

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