" There is nothing so unthinkable as thought, unless it be the entire absence of thought. "
- Samuel Butler

In essence, Samuel Butler's statement reflects on the nature of thought itself. It suggests that thinking, while a fundamental part of human experience, can be overwhelming and intricate, making it difficult for some to grasp its complexities. The statement implies that contemplation and reflection are so complex and nuanced that they might seem unimaginable or beyond comprehension at times.

The deeper meaning of Butler's quote delves into the contrast between active thought processes and a lack thereof. He posits that while engaging in thought can be challenging due to its multifaceted nature, there is an even more profound emptiness in having no thoughts at all. This absence suggests a void or a state devoid of mental activity and creativity, which he considers equally as unimaginable but perhaps in a different way. It implies that both the act of thinking deeply and the complete cessation of thought are states that can seem almost impossible to fully grasp or experience.

Samuel Butler was an English author and satirist who lived from 1835 to 1902. He is best known for his novels "Erewhon" (a wordplay on 'nowhere') and its sequel, which explore themes of society, morality, and human nature in a speculative manner. Butler's works often challenge conventional ideas and critique societal norms through wit and sharp observation. His insightful musings on thought and humanity contribute to the rich tapestry of philosophical literature in English language history.