Time is Too Slow for those who Wait, Too Swift for those who Fear, Too Long for those who Grieve, Too Short for those who Rejoice; But for those who Love, Time is not.

This quote is saying that time can be experienced differently by those in various emotional states. For those who are eagerly waiting for something, time seems to move too slow. While those who are anxious about something, time appears to move too quickly. For those who are grieving, time feels too long, but for those who are in a state of joy and celebration, time appears to move too fast. But for those who have love in their life, time has no significance.