"The famous principle, 'Know thyself,' is not merely an exhortation to self-knowledge, but also, and more fundamentally, a demand for knowledge of the nature of Spirit."

"The true is the rational, and the rational is the true."

"The rose in the cross of the present."

"The individual, for as much as he is a particular, is a natural being."

"Man is a thinking being, and this is what distinguishes him from the animals."