Reason is only one relatively superficial source of knowledge than can only explain the empirical world. That's why Ayn Rand and so forth always irritated me with their shallow arrogance.

I dig:

Emerson--Transcendentalism always sat very well with me. Spiritual, but not in an organized doctrinaire manner...very nice

Nietzsche--renounced the Judeo-Christian ethic and the stupdity of egalitarianism

Kant--acknowledged that some things are beyond reason and require a bit of a leap

Rousseau--huge influence on the enlightenment and on Romanticism; created some new ideals, exposed tyranny