1. "A friend in need is a friend indeed."
2. "Friendship is like wine, the older, the better."
3. "True friendship comes when the silence between two people is comfortable."
4. "A single rose can be my garden... a single friend, my world."
5. "The best mirror is an old friend."
6. "In prosperity our friends know us； in adversity we know our friends."
7. "Friends are the siblings God never gave us."
8. "One loyal friend is worth ten thousand relatives."
9. "The greatest gift of life is friendship."
10. "Familiar paths and old friends are the best."
这些格言涵盖了友谊的不同方面，从朋友在困难中的价值到友谊随时间增长的深度。您可以根据自己的情境选择适合的格言来表达或反思友谊的重要性