Verb
seize the initiative (third-person singular simple present seizes the initiative, present participle seizing the initiative, simple past and past participle seized the initiative)
Alternative form of take the initiative.
Jigoro Kano's Five Principles of Judo: 1. Carefully observe oneself and one's situation, carefully observe others, and carefully observe one's environment, 2. Seize the initiative in whatever you undertake, 3. Consider fully, act decisively, 4. Know when to stop, 5. Keep to the middle. Jigoro Kano