"Everyone is a genius at least once a year. The real geniuses simply have their bright ideas closer together " — Georg Christoph Lichtenberg

In action a great heart is the chief qualification. In work, a great head

People who lean on logic and philosophy and rational exposition end by starving the best part of the mind.

Nature and books belong to the eyes that see them.

A fool often fails because he thinks what is difficult is easy, a wise man because he thinks what is easy is difficult

Travelling expands the mind rarely

A free society is one where it is safe to be unpopular

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