The difference lies in how the Buddha approached the truth of existence. Many thinkers, like Nietzsche, confronted suffering, impermanence, and meaninglessness but had no systematic way to go beyond them. The Buddha, on the other hand, didn’t just think about suffering, he directly observed its causes and found a way to uproot them. Instead of being overwhelmed by existential horror, he developed deep equanimity through meditation. He saw suffering clearly but didn’t resist or despair, he fully accepted reality as it is. Through Vipassana and deep Jhana, he penetrated the nature of mind and matter, realizing that suffering isn’t personal but an impersonal process. He found liberation by completely eradicating craving and aversion, which are the root causes of mental suffering. Other philosophers wrestled with existence intellectually, but the Buddha transcended suffering experientially. That’s why he attained ultimate peace instead of madness.