Certain strong and dangerous instincts, such as the love of enterprise, foolhardiness, revengefulness, astuteness, rapacity, and love of power, which up till then had not only to be honoured from the point of view of general utility under other names, of course, than those here given but had to be fostered and cultivated (because they were perpetually required in the common danger against the common enemies), are now felt in their dangerousness to be doubly strong when the outlets for them are lacking and are gradually branded as immoral and given over to calumny.