When we have weighed everything, and when our relations in life permit us to choose any given position, we may take that one which guarantees us the greatest dignity, which is based on ideas of whose truth we are completely convinced, which offers the largest field to work for mankind and approach the universal goal for which every position is only a means: perfection.

Writings of the Young Marx on Philosophy and Society, L. Easton, trans. (1967), p. 38 - Reflections of a Youth on Choosing an Occupation (1835)