Discourses: Book 2 6 : 1
The hypothetical syllogism in itself is a matter of indifference; yet the judgement about it is not indifferent, but is either knowledge, or opinion, or delusion. In like manner, although life is a matter of indifference, the use which you make of it is not a matter of indifference. Therefore, when someone tells you, "These things also are indifferent," do not become careless, and when someone exhorts you to be careful, do not become abject and overawed by material things. It is good also to know one's own training and capacity, so that where you have had no training you may keep quiet and not be annoyed if some other persons outshine you in those matters. For you in your turn will expect to outshine them in syllogisms, and if they are annoyed at that, you will console them by saying, "I have learned this, and you have not." So also in a case where some acquired skill is needed, do not seek that which only practice can give, but leave that to those who have acquired the knack, and be content yourself to remain steadfast.