The snake which cannot cast its skin has to die. As well the minds which are prevented from changing their opinions; they cease to be mind. – Friedrich Nietzsche

The quote carries a profound moral about the necessity of adaptability and growth. Just as a snake sheds its old skin to continue living and growing, the human mind must also be capable of evolving its perspectives and beliefs. This metaphor emphasizes that rigidity in thought and an unwillingness to change are akin to a mental death. The ability to adapt, reconsider, and modify our views in the light of new information or different perspectives is not just a sign of intellectual maturity, but it is essential for our mental and emotional survival. This quote serves as a powerful reminder that the health and vitality of our minds depend on our willingness to embrace change and growth, just as much as our physical survival depends on our biological ability to adapt.

NEW IN CSS3: Styling specific children with pseudo-classes ★ Designers often want to apply a style to an element that is the first element to appear within another element, such as a parent’s first child. The first-child pseudo-element has been available since CSS2; however, CSS3 offers an assortment of new structural pseudo-elements for styling an element’s child element exactly :first-child—Sets the appearance of the first instance of a selector type if it is the first child of its parent. :first-of-type—Sets the appearance of an element the first time its selector type appears within the parent. :nth-child(#)—Sets the appearance of the specific occurrence of the specified child element. For example, the third child element of a paragraph would be p:nth-child(3). :nth-of-type(#)—Sets the appearance of the specific occurrence of a selector type within the parent. For example, the seventh paragraph would be p:nth-of-type(7). :nth-last-of-type(#)—Sets the appearance of the specific occurrence of a selector type within the parent, but from the bottom. For example, the third paragraph from the bottom would be p:nth-last=of-type(3). :last-child—Sets the appearance of the element of the indicated selector type if it is the last child of the parent. :last-of-type—Sets the appearance of the last instance of a particular selector type within its parent.