Thomas Aquinas

“ Now a passion is sometimes moderated according to reason, and sometimes it lacks moderation, either by excess or by deficiency, and on this account the passion is sinful. Again, the names of the passions are sometimes employed in the sense of excess, thus we speak of anger meaning not any but excessive anger, in which case it is sinful, and in the same way daring as implying excess is accounted a sin. ”

“ Hence the names of certain passions have to be applied to certain vices and virtues: and in order to designate vices we employ especially the names of those passions the object of which is an evil, as in the case of hatred, fear, anger and daring. But hope and love have a good for this object, and so we use them rather to designate virtues.
Art. 2 - Whether daring is opposed to fortitude? Objection 1: It seems that daring is not opposed to fortitude. For excess of daring seems to result from presumption of mind. ”

“ Further, daring does not seem to call for blame, except in so far as it results in harm either to the daring person who puts himself in danger inordinately, or to others whom he attacks with daring, or exposes to danger. ”

“ On the contrary, It is written (Ecclus. 8:18) : "Go not on the way with a bold man, lest he burden thee with his evils." Now no man's fellowship is to be avoided save on account of sin. Therefore daring is a sin.
I answer that, Daring, as stated above (FS, Q [23] , A [1] ; Q [55] ) , is a passion. ”