Ex virtute absoluto agere nihil aliud in nobis est, quam ex ductu Rationis agere, vivere, suum esse conservare (haec tria idem significant) ex fundamento proprium utile quaerendi. To act absolutely according to virtue is nothing else in us than to act under the guidance of reason, to live so, and to preserve one's being (these three have the same meaning) onthebasis of seeking what isusefulto oneself.

-Spinoza, Baruch also known as Benedict de Spinoza
  Ethics, bk.4, prop.24.

Before us lay a painful road, And guidance have I sought in duteous love From Wisdom's heavenly Father. Hence hath flowed Patience, with trust that, whatsoe'er the way Each takes in this high matter, all may move Cheered with the prospect of a brighter day.

-Wordsworth,William
^40  Sonnets upon the Punishment of Death, no.14,'Apology', l.9^14 (published in the Quarterly Review 1841).