Famous quotes containing the words thought and/or experiments:
“Let us think this thought in its most terrible form: existence as it is, without meaning or aim, and yet recurring inevitably, without a finale in nothingness—”eternal recurrence.””
—Friedrich Nietzsche (1844–1900)
“The true thrift is always to spend on the higher plane; to invest and invest, with keener avarice, that he may spend in spiritual creation, and not in augmenting animal existence. Nor is the man enriched, in repeating the old experiments of animal sensation; nor unless through new powers and ascending pleasures he knows himself by the actual experience of higher good to be already on the way to the highest.”
—Ralph Waldo Emerson (1803–1882)